Shareholders sued IAC/Interactive Corp. in Delaware Chancery Court, demanding that its plan to spin off four divisions keep the single class of stock and the two-tiered “high-vote/low-vote” equity structure that the company has in place as a single business unit. Also sued are William Berkman, Barry Diller, Edgar Bronfman Jr., Victor Kaufman, Arthur Martinez, Steven Rattner, Alan Spoon, Diane Von Furstenberg, Keough Lourd, John Malone, Norman Schwarzkopf, and Liberty Media Corp.